Bubble level



FIG. 1 is an isometric view showing the bubble level of my new design;

FIG. 2 is a side elevational view of the bubble level;

FIG. 3 is a side elevational view of the bubble level of the side opposite the side shown in FIG. 2;

FIG. 4 is an end elevational view of the bubble level;

FIG. 5 is an end elevational view of the bubble level of the end opposite the end shown in FIG. 4;

FIG. 6 is a top plan view of the bubble level; and,

FIG. 7 is a bottom plan view of the bubble level.

It is understood that the dashed lines presented in the drawings are for illustration only, and do not form a part of the claimed design. 

The ornamental design for the bubble level, substantially as shown and described. 